Help making Backup for Usaf

[Jimmy]

I have been trying to back up Usaf using Nero and a hp 8100 burner I have used the recommended copy procedures but I can only get it to read to about 90 percent and it just sticks there any ideas or is there an app out there that I can make an img or ngr nrg file for nero to Burn it Help Thanks ps all other games I have had no trouble with.